Gaya APA

Schultheis, R, A., Kaczmarski, R, M. (2003). Business math 15th Ed (15th Ed). Mason, Ohio: South-western Publishing Company..

Gaya MLA

Schultheis, Robert, A., Kaczmarski, Raymond, M. "Business math 15th Ed". 15th Ed Mason, Ohio: South-western Publishing Company., 2003. Text.